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Use of kaolin clay in aqueous barrier coating applications, TAPPI Journal November 2023

ABSTRACT: Paper-based packaging with barrier effect, as opposed to single use plastics, is gaining more prominence for sustainability reasons. At the same time, latex- or biopolymer-based aqueous barrier coating dispersions are increasingly being adopted as a better alternative to the traditional barrier coating materials, such as wax, surface active chemicals, and polyethylene. In this work, studies were performed to determine the influence of different kaolin clays in latex binder-based aqueous coatings on barrier properties, namely, oil and grease, water resistance, and water vapor transmission rate, by applying coatings to solid bleached sulfate (SBS) paperboard substrate in the laboratory. The aim was to explore potential benefits of using kaolin clay to replace some of the latex binder in coating and improve or maintain various types of barrier performance and blocking without negatively influencing the other performance attributes, including heat seal. The delaminated clay with the highest shape factor provided improved barrier properties over the clays of low shape factor. The ultrafine and non-delaminated clays required significantly higher coat weights to reach satisfactory barrier properties. Coatings with different latex levels indicated that a considerably high proportion of coarse delaminated clay can be incorporated to replace latex binder, while still achieving exceptional barrier properties. Furthermore, a change in binder system was found to significantly alter the barrier properties and the role that a mineral pigment can play. The results indicate that a proper selection of binder systems for each barrier property would be required while considering the clay/latex coating systems.

Pulp and paper mills: The original biorefineries — past performance and limitations to future opportunities, TAPPI Journal October 2023

ABSTRACT: Pulp mills have been biorefineries since the invention of the Tomlinson recovery boiler. Unfortunately, the paper industry has done a poor job explaining that concept to the general public. A number of bioproducts in everyday use have been produced by pulp mills for several decades, and new products are routinely being developed. Modern research efforts over the last couple of decades have focused on producing even more products from pulp and paper mills through capacity enhancement and the development of value-added products and liquid transportation fuels to enhance paper mill profitability. Some of these efforts, often referred to as modern biorefineries, have focused so heavily on product development that they have ignored operating and process realities that limit the transformation of pulp and paper mills from the current limited number of bioproducts produced today to economic scale production of these value-added products. In this paper, several of these limitations are addressed. In addition, there are several supply chain, marketing, product quality, and economic realities limiting the value potential for these wholesale conversions of pulp mills into multiproduct modern biorefineries. Finally, the conservative nature and capital intensity of the pulp and paper industries provide a difficult hurdle for conversion to the modern biorefinery concept. These issues are also reviewed.

Unveiling the Cellulose-Water Interaction Through Computational Simulations, TAPPICon 2023

Toxicity Identification and Reduction for Two Fine Paper Mil

Toxicity Identification and Reduction for Two Fine Paper Mill Effluents, 1994 Environmental Conference Proceedings

It is not a question of IF: Digital Printing for Corrugated Packaging

It is not a question of IF: Digital Printing for Corrugated Packaging Speakers: Kevin Karstedt, CEO, Karstedt Partners, LLC; Jeff Wettersten, President, Karstedt Partners, LLC For most corrugated

Sodium chlorate (NaClO3) safe handling and storage, Technical Information Paper TIP 0606-31 (2022)

Sodium chlorate (NaClO3) safe handling and storage, Technical Information Paper TIP 0606-31 (2022)

A New Dual Biocide Concept for Fine Papermaking, PaperCon 2010 Conference

A New Dual Biocide Concept for Fine Papermaking, PaperCon 2010 Conference

Utilization of Print Quality & Data Integrity Inspection to Optimize Value of Printing and Converting Processes, 2010 PLACE Conference

Utilization of Print Quality & Data Integrity Inspection to Optimize Value of Printing and Converting Processes, 2010 PLACE Conference

Energy efficient mechanical pulping • summary of the Scandin

Energy efficient mechanical pulping • summary of the Scandinavian industry initiative research work 2011 - 2015, 2016 International Mechanical Pulping Conference

Untaught Experiences Regarding Common Practice and Standards

Untaught Experiences Regarding Common Practice and Standards for Sampling, Characterization, Control, and Design of TMP and CTMP Operations, 2016 International Mechanical Pulping Conference